Antti Kallio, Timo Veijola, Janne Roos, Mikael Andersson, Martti Valtonen. General measurement-based circuit model for symmetrical four-port RF transformers. In 19th European Conference on Circuit Theory and Design, ECCTD 2009, Antalya, Turkey, August 23-27, 2009. pages 371-374, IEEE, 2009. [doi]
Abstract is missing.